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GeForce 9800 GT 1GB vs GeForce GT 430 1GB

Intro

The GeForce 9800 GT 1GB features a GPU core speed of 600 MHz, and the 1024 MB of GDDR3 RAM runs at 900 MHz through a 256-bit bus. It also is made up of 112 Stream Processors, 56 Texture Address Units, and 16 ROPs.

Compare those specs to the GeForce GT 430 1GB, which features GPU clock speed of 700 MHz, and 1024 MB of GDDR3 RAM running at 900 MHz through a 128-bit bus. It also is comprised of 96 SPUs, 16 Texture Address Units, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 1GB 60 Watts
GeForce 9800 GT 1GB 105 Watts
Difference: 45 Watts (75%)

Memory Bandwidth

As far as performance goes, the GeForce 9800 GT 1GB should in theory be much better than the GeForce GT 430 1GB overall. (explain)

GeForce 9800 GT 1GB 57600 MB/sec
GeForce GT 430 1GB 28800 MB/sec
Difference: 28800 (100%)

Texel Rate

The GeForce 9800 GT 1GB will be quite a bit (about 200%) more effective at anisotropic filtering than the GeForce GT 430 1GB. (explain)

GeForce 9800 GT 1GB 33600 Mtexels/sec
GeForce GT 430 1GB 11200 Mtexels/sec
Difference: 22400 (200%)

Pixel Rate

The GeForce 9800 GT 1GB is a lot (more or less 243%) more effective at AA than the GeForce GT 430 1GB, and also should be able to handle higher screen resolutions better. (explain)

GeForce 9800 GT 1GB 9600 Mpixels/sec
GeForce GT 430 1GB 2800 Mpixels/sec
Difference: 6800 (243%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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GeForce 9800 GT 1GB

Amazon.com

GeForce GT 430 1GB

Amazon.com

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce 9800 GT 1GB GeForce GT 430 1GB
Manufacturer nVidia nVidia
Year July 2008 October 2010
Code Name G92a/b GF108
Memory 1024 MB 1024 MB
Core Speed 600 MHz 700 MHz
Memory Speed 1800 MHz 1800 MHz
Power (Max TDP) 105 watts 60 watts
Bandwidth 57600 MB/sec 28800 MB/sec
Texel Rate 33600 Mtexels/sec 11200 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 2800 Mpixels/sec
Unified Shaders 112 96
Texture Mapping Units 56 16
Render Output Units 16 4
Bus Type GDDR3 GDDR3
Bus Width 256-bit 128-bit
Fab Process 65/55 nm 40 nm
Transistors 754 million 585 million
Bus PCIe x16 2.0 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

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